|
|
A139981
|
|
Primes of the form 19x^2+40y^2.
|
|
1
|
|
|
19, 59, 179, 211, 331, 379, 659, 811, 971, 1019, 1091, 1171, 1291, 1459, 1571, 1579, 1699, 1931, 1979, 2131, 2179, 2339, 2371, 2459, 2539, 2579, 2659, 2731, 2939, 3251, 3259, 3299, 3371, 3491, 3499, 3571, 3739, 3851, 4019, 4099, 4211, 4259
(list;
graph;
refs;
listen;
history;
text;
internal format)
|
|
|
OFFSET
|
1,1
|
|
COMMENTS
|
Discriminant=-3040. See A139827 for more information.
|
|
LINKS
|
|
|
FORMULA
|
The primes are congruent to {19, 51, 59, 91, 179, 211, 219, 259, 299, 331, 371, 379, 411, 451, 459, 531, 611, 659, 699, 811, 819, 851, 939, 971, 979, 1019, 1059, 1091, 1131, 1139, 1171, 1211, 1219, 1291, 1371, 1419, 1459, 1571, 1579, 1611, 1699, 1731, 1739, 1779, 1819, 1851, 1891, 1899, 1931, 1971, 1979, 2051, 2131, 2179, 2219, 2331, 2339, 2371, 2459, 2491, 2499, 2539, 2579, 2611, 2651, 2659, 2691, 2731, 2739, 2811, 2891, 2939, 2979} (mod 3040).
|
|
MATHEMATICA
|
QuadPrimes2[19, 0, 40, 10000] (* see A106856 *)
|
|
PROG
|
(Magma) [p: p in PrimesUpTo(6000) | p mod 3040 in [19, 51, 59, 91, 179, 211, 219, 259, 299, 331, 371, 379, 411, 451, 459, 531, 611, 659, 699, 811, 819, 851, 939, 971, 979, 1019, 1059, 1091, 1131, 1139, 1171, 1211, 1219, 1291, 1371, 1419, 1459, 1571, 1579, 1611, 1699, 1731, 1739, 1779, 1819, 1851, 1891, 1899, 1931, 1971, 1979, 2051, 2131, 2179, 2219, 2331, 2339, 2371, 2459, 2491, 2499, 2539, 2579, 2611, 2651, 2659, 2691, 2731, 2739, 2811, 2891, 2939, 2979]]; // Vincenzo Librandi, Aug 03 2012
|
|
CROSSREFS
|
|
|
KEYWORD
|
nonn,easy
|
|
AUTHOR
|
|
|
STATUS
|
approved
|
|
|
|